Exploiting vulnerability is one of the hacking steps that may take place when

Hiding files to avoid detection, this is done during

Man in the middle attack happens when the attacker tricks the user to submit login details via email or message and redirect him/her to malicious site.

Unskilled hackers relying on pre-written scripts and tools developed by others

DNS amplification attack happens When an attacker tries to navigate out side root directory to access sensitive information in the system

Enumeration  is the process done by attackers after  gain a “shell” on the target system, to increase their knowledge

SQL injection is considered one of passive attacks

installed applications can be found by  listing the files in /usr/bin/ and /sbin/

Increasing access rights to gain more control over the system, this refers to Escalating Privileges

Integrity Ensures that information is accessible only to those who are authorized to have access